Daniel is a technician for Level 3 Communications. That probably doesn't tell you much. It was really important to him to bring Danya and Gloria to the "Take Your Daughter to Work Day" activities at his office this year, so they could find out more about what he actually does. In years past he's always worked a night shift, which meant the timing was wrong to bring them. This year they could participate in all the activities and even climb inside one of the field trucks.
Daniel monitors the network via computer, watching for problems in the phone lines and trouble shooting those problems. Then he calls to dispatch a field technician who goes to the actual site of the problem. The two of them work together to figure out what needs to be replaced or repaired, and then Daniel orders the materials to be shipped. Some of the groups who use their phone lines include 911 emergency services and the U.S. military. What he does is complicated, using every bit of his 16 years of experience, and although most of us don't think about what he does, we'd definitely notice if he wasn't doing it.